Mili iData Pro 64GB Lightning & Micro USB Storage Drive: $74

Mili’s iData Pro makes it easy to boost your iPhone or iPad’s storage, and it keeps your data secure, too. It connects to your iOS device’s Lightning port and can hold 64GB worth of movies, music, and photos so you don’t have to pack as much into your built-in memory. The iData Pro also sports Touch ID security to keep your files safe from prying eyes. It’s usually priced at US$99.99, but you can grab one for $74.99 (that’s 24% off) with today’s TMO deal.